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3 years ago

The motion of a guitar string as it moves would be an example of:

Physics

2 answers:

sattari [20]3 years ago

6 0

Answer:

C Vibrational motion

Explanation:

vibrational motion is when the sound is endured from going side to side

Salsk061 [2.6K]3 years ago

3 0

Answer:

C) Vibrational motion

Explanation:

As we know that the guitar string will vibrate about its mean position in such a way that it will oscillate to and fro.

Due to this to and fro motion of the string of the guitar the air molecules will start oscillating and this disturbance of air will produce sound in the air column attached with the guitar string

So here the motion of guitar string is to and fro motion about the mean position of the string

this type of to and fro motion about the mean position is known as Vibrational Motion.

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As a new electrical technician, you are designing a large solenoid to produce a uniform 0.150-T magnetic field near the center o

Kamila [148]

Answer:

I = 21.94 A

Explanation:

Given that

B= 0.15 T

Number of turns N= 3100

Length L = 57 cm

Diameter ,d= 7 cm

We know that magnetic field in the solenoid given as

$B=\dfrac{\mu_0IN}{L}$

$I=\dfrac{BL}{\mu_0N}$

Now by putting the values

$I=\dfrac{0.15\times 0.57}{4\pi \times 10^{-7}\times 3100}$

I = 21.94 A

Therefore current need to produce 0.15 T magnetic filed is 21.94 A.

3 0

3 years ago

A speaker generates a continuous tone of 440 Hz. In the drawing, sound travels into a tube that splits into two segments, one lo

chubhunter [2.5K]

Answer:

The minimum difference between the lengths of the two tubes should be 0.385 meters.

Explanation:

As we known that for any two waves to arrive in phase at any point the difference in the path traveled by the waves should be an integral multiple of the wavelength of the wave.

Mathematically we can write:

$\Delta x=n\frac{\lambda }{2}$

For the given wave we have

$\lambda =\frac{v}{\nu }$

Applying values we get

$\lambda =\frac{339}{440 }=0.77m$

Thus the minimum difference in the lengths of the tubes can be obtained by putting the value of n = 1

$\therefore \Delta x=1\times \frac{0.77}{2}=0.385m$

7 0

4 years ago

A hot air balloon is traveling vertically upward at a constant speed of 4.5 m/s. When it is 28 m above the ground, a package is

ella [17]

Answer:

1.97 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.8 m/s²

$s=ut+\frac{1}{2}at^2\\\Rightarrow 21=4.5t+\frac{1}{2}\times -9.8\times t^2\\\Rightarrow 21=-4.5t-4.9t^2\\\Rightarrow 4.9t^2+4.5t-28=0\\\Rightarrow 49t^2+45t-280=0$

Solving the above equation we get

$t=\frac{-45+\sqrt{45^2-4\cdot \:49\left(-280\right)}}{2\cdot \:49}, \frac{-45-\sqrt{45^2-4\cdot \:49\left(-280\right)}}{2\cdot \:49}\\\Rightarrow t=1.97, -2.89$

So, the time the package was in the air is 1.97 seconds

3 0

3 years ago

In Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States. Therefore "100-W" European bulb

Maslowich

Explanation:

In Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States.

100-W European bulb would be intended for use with a 220-V potential difference.

(a) If V = 220 V and P = 100 W

Power :

$P=\dfrac{V^2}{R}\\\\R=\dfrac{V^2}{P}\\\\R=\dfrac{(220)^2}{100}\\\\R=484\ \Omega$

If you bring a "100-W" European bulb home to the untied States, what should be its US power rating. So,

$P=\dfrac{V^2}{R}\\\\P=\dfrac{(120)^2}{484}\\\\P=29.75\ W$

P = 29.8 watts

(b) Let I is the current will the 100-W European bulb draw in normal use in the United States. So,

$I=\dfrac{V}{R}\\\\I=\dfrac{120}{484}\\\\I=0.248\ A$

Hence, this is the required solution.

3 0

3 years ago

Read 2 more answers

What is the difference between methane and fluorinated gases

almond37 [142]

Methane is emitted during the production and transport of coal,natural gas,and oil,while fluorinated gases are emitted from a variety industrial processes.

6 0

3 years ago